/*!	 colorcorrect.h
**	 Header file for implementation of the "Color Correct" layer
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2012-2013 Carlos López
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifndef __SYNFIG_LAYER_COLORCORRECT_H
#define __SYNFIG_LAYER_COLORCORRECT_H

#include <synfig/layer.h>
#include <synfig/angle.h>
#include <synfig/gamma.h>
#include <synfig/rect.h>

namespace synfig
{
namespace modules
{
namespace mod_filter
{

class Layer_ColorCorrect : public Layer
{
    SYNFIG_LAYER_MODULE_EXT

private:
    // Parameter: (Angle)
    ValueBase param_hue_adjust;
    // Parameter: (Real)
    ValueBase param_brightness;
    // Parameter: (Real)
    ValueBase param_contrast;
    // Parameter: (Real)
    ValueBase param_exposure;
    // Parameter: (Real)
    ValueBase param_gamma;
    // This gamma member is kept to avoid need to recalculate the gamma table
    // on each pixel
    Gamma gamma;

    Color correct_color(const Color &in)const;

public:

    Layer_ColorCorrect();

    virtual bool set_param(const String & param, const synfig::ValueBase &value);

    virtual ValueBase get_param(const String & param)const;

    virtual Color get_color(Context context, const Point &pos)const;

    virtual Rect get_full_bounding_rect(Context context)const;

    virtual bool accelerated_render(Context context, Surface *surface, int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
    virtual bool accelerated_cairorender(Context context, cairo_t *cr, int quality, const RendDesc &renddesc, ProgressCallback *cb)const;

    virtual Vocab get_param_vocab()const;

    virtual rendering::Task::Handle build_rendering_task_vfunc(Context context)const;
}; // END of class Layer_ColorCorrect

}; // END of namespace mod_filter
}; // END of namespace modules
}; // END of namespace synfig

#endif